<?php
    header("Content-type:text/html;charset=utf-8");
    $mysqli = new mysqli("localhost","root","root","sten");
    // echo $mysqli->connect_errno;
    if($mysqli->connect_errno != 0){
        die();
    }
    $sql = "select * from datas";
    $res = $mysqli->query($sql);
    for($i = 0;$i < $res->num_rows; $i++){
        $data[] = $res->fetch_assoc();
    }
    print_r(json_encode($data));
?>